1. A city has 74,806 registered automobiles. Each is required to display a bumper decal showing that the owner paid an annual wheel tax of $50. By law, new decals needed to be purchased during the month of the owner’s birthday. How much wheel tax revenue can the city expect to receive in November? 2. expected value = E(X) = summation(x*f(x)) Leibnitz's rule 3. I thought there was not enough information in the problem. Can we assume that people are equally likely to be born in the different months of the year? Anyway, all I have is E(X) = (74,506*50)*1/12 where the part in parenthesis is x and 1/12 is the probability function (not sure).